diff --git a/src/Wallabag/CoreBundle/Form/Type/EntryFilterType.php b/src/Wallabag/CoreBundle/Form/Type/EntryFilterType.php
index 5c2216cf2..cd4d34902 100644
--- a/src/Wallabag/CoreBundle/Form/Type/EntryFilterType.php
+++ b/src/Wallabag/CoreBundle/Form/Type/EntryFilterType.php
@@ -38,6 +38,10 @@ class EntryFilterType extends AbstractType
                 'apply_filter' => function (QueryInterface $filterQuery, $field, $values) {
                     $value = $values['value'];
 
+                    if (null === $value['left_number'][0] || null === $value['right_number'][0]) {
+                        return;
+                    }
+
                     $min = (int) ($value['left_number'][0] * $this->user->getConfig()->getReadingSpeed());
                     $max = (int) ($value['right_number'][0] * $this->user->getConfig()->getReadingSpeed());
 
diff --git a/src/Wallabag/CoreBundle/Tests/Controller/EntryControllerTest.php b/src/Wallabag/CoreBundle/Tests/Controller/EntryControllerTest.php
index 64ebd6318..df4c34cd8 100644
--- a/src/Wallabag/CoreBundle/Tests/Controller/EntryControllerTest.php
+++ b/src/Wallabag/CoreBundle/Tests/Controller/EntryControllerTest.php
@@ -462,8 +462,8 @@ class EntryControllerTest extends WallabagCoreTestCase
         $form = $crawler->filter('button[id=submit-filter]')->form();
 
         $data = [
-            'entry_filter[readingTime][right_number]' => 11,
-            'entry_filter[readingTime][left_number]' => 11,
+            'entry_filter[readingTime][right_number]' => 22,
+            'entry_filter[readingTime][left_number]' => 22,
         ];
 
         $crawler = $client->submit($form, $data);